10 Most Common John Deere Z810A Problems - Easy Fix (2024)

Zero-turn mowers like the John Deere Z810A are efficient and versatile machines used for maintaining large lawns and fields. However, they are not immune to problems affecting their performance and functionality.

Some of the most common problems with John Deere Z810A include engine issues, belt problems, and electrical malfunctions. Moreover, hydrostatic transmission, steering, tire, PTO clutch, braking, mower deck, and blade issues can also occur.

To ensure that your mower continues to function optimally, you should be aware of these problems and their signs. Hence, this article will discuss all these issues and their solutions.

What Are the Most Common John Deere Z810A Problems? – Their Solutions

Here’s a table to give you a brief idea about the problems of John Deere Z810A and their fixes

Engine issuesCheck air filter, spark plugs, and fuel lines; replace or clean as necessary
Belt problemsInspect for wear and proper tension; replace worn-out belts and adjust tension if required
Electrical issuesCharge or replace the dead battery; check and replace blown fuses; repair or replace damaged wiring or components
Hydrostatic transmission issuesInspect fluid level and add fluid if essential; replace damaged seals or components
Steering problemsLook for damaged steering linkages or gears and replace; replace faulty hydraulic components
Tire problemsRepair or substitute punctured or leaking tires; check tire treads and inflate to recommended pressure
PTO Clutch problemsInspect the wiring connections; check and clean the clutch; adjust the air gap or replace the clutch as necessary
Braking issuesCheck for worn brake pads and damaged components; adjust brakes or replace damaged components
Mower deck problemsLook for frayed blades and debris buildup; replace blades and remove debris
Blade problemsReplace or repair dull, bent, unbalanced, or improperly installed blades as necessary

Here are some common problems that can occur with the mower John Deere Z810A, along with their solutions:

1. Engine Problems

The engine is the heart of the mower, and any issues with it can be very frustrating. Some common engine problems with zero-turn mowers include

  • Poor starting
  • Low power
  • Engine misfires

These issues can be caused by a range of factors, including dirty air filters, fouled spark plugs, and clogged fuel lines.


Here is how you can solve engine-related problems

  • If the engine is not starting or has low power, check the air filter, spark plugs, and fuel lines.
  • If the air filter is dirty, replace it.
  • Fouled spark plugs should be cleaned or replaced. Also, clogged fuel lines should be cleaned or replaced.

2. Belt Problems

Zero-turn mowers use multiple belts to drive the mower deck and transmission. These belts can wear out over time due to age, slip, or break, causing the mower to lose power or stop moving altogether.

Such scenarios can be caused by improper belt tension and debris in pulleys.


  • If the belts are slipping or broken, check for wear and proper tension.
  • Replace worn-out belts and adjust the tension if necessary.
  • Remove any debris from the pulleys to prevent damage to the belts.

3. Electrical Problems

The Z810A uses a complex electrical system to power its various components, including the engine, lights, and other accessories. Electrical problems can be caused by issues such as faulty wiring, blown fuses, or dead batteries.

Corrosion, worn-out components, and improper installation can contribute to zero-turn mowers’ electrical problems.


  • If the battery is dead, replace it.
  • Check for blown fuses and replace them if necessary.
  • If the wiring is damaged, repair or replace it.
  • Corrosion on electrical components can be removed with a wire brush.

4. Hydrostatic Transmission Problems

The hydrostatic transmission is a key component of the Z810A’s drive system. Any issues with it can cause the mower to lose power or stop moving altogether.

Signs of transmission problems can include-

  • Transmission slipping
  • Loss of power
  • Fluid leaks

Damaged seals, rusted components, and low fluid levels can cause these issues.


  • If the transmission is slipping or has low power, check the fluid level and add fluid if necessary.
  • If the seals or components are damaged, they may need to be replaced.

5. Steering Problems

Zero-turn mowers rely on a complex steering system to allow for tight turns and precise control. Symptoms of steering problems can include loose or difficult steering and uneven turns.

Damaged steering linkages, worn-out gears, and faulty hydraulic components can drive these problems.


  • For loose or difficult steering, check for damaged steering linkages or gears and replace accordingly.
  • If hydraulic components are faulty, they may need to be replaced.

6. Tire Problems

The tires on a zero-turn mower like John Deere Z810A are critical for providing traction and stability. You can assume tire problems if there are punctures, leaks, and worn treads.

Debris on the lawn, worn-out tires and improper inflation can all be responsible for tire-related problems.


You need to fix such issues in the following manner

  • Check the tire treads and inflate the tires to the recommended pressure.
  • If the tires are punctured or leaking, repair or replace them.

7. PTO Clutch Problems

The power take-off (PTO) clutch that engages the blades may fail to work properly, which can prevent the mower from cutting grass. This can be caused by a faulty clutch or wiring issues.


To fix a faulty PTO clutch on your John Deere Z810A, you can-

  • Check and secure the wiring connections.
  • Inspect and clean the clutch.
  • Adjust the air gap or replace the clutch.

8. Braking Problems

Brakes are important for controlling the speed and stopping the mower when needed. Signs of braking problems can include poor stopping and weak brakes.

Rusted brake pads, damaged components, and improper adjustments can be responsible for such problems.


Brake-related problems will require the following solutions

  • If the brakes are not working properly, check for worn brake pads and damaged components.
  • Adjust the brakes if necessary or replace any damaged components.

9. Mower Deck Problems

The mower deck is responsible for cutting the grass, and any issues can cause poor cutting performance or damage to the mower. If you notice poor cutting performance and damaged or bent components, the problem is most likely in the deck.

These issues can be caused by rusted blades, debris buildup, and damage from hitting obstacles.


  • Check for damaged blades and debris buildup.
  • Replace damaged blades and remove any debris from the deck.

10. Blade Problems

Blade problems can cause-

  • poor cutting performance
  • uneven cut
  • vibration
  • noise

Such issues can be caused by dull or damaged blades, bent blades, unbalanced blades, or improperly installed blades.


  • If the blades are dull, bent, or unbalanced, they should be repaired. If repairing is not possible, replace the blades.
  • If the blade isn’t properly installed, tune and fix the blade by a mechanic.

Final Thoughts

Owning a zero-turn mower like the John Deere Z810A requires regular maintenance and a keen eye for potential problems. Identifying and addressing these problems promptly can extend the lifespan of the machine, prevent costly repairs, and ensure optimal performance.

Maintaining the machine according to the manufacturer’s manual, inspecting it regularly, and taking corrective measures when necessary is vital. With proper care and attention, such zero-turn mowers can provide reliable and efficient lawn care for years to come.

10 Most Common John Deere Z810A Problems - Easy Fix (2024)
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